Log levels (TRACE, DEBUG, INFO, WARN, ERROR) in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to log an informational message using Spring Boot's Logger.

Spring Boot

logger.[1]("Application started successfully.");

Drag options to blanks, or click blank then click option'

Atrace

Binfo

Cerror

Dwarn

Attempts:

3 left

💡 Hint

Common Mistakes

Using error or warn for normal info messages.

The info level is used for general informational messages that highlight the progress of the application.

2fill in blank

medium

Complete the code to log a warning message about low disk space.

Spring Boot

logger.[1]("Disk space is running low.");

Drag options to blanks, or click blank then click option'

Adebug

Binfo

Ctrace

Dwarn

Attempts:

3 left

💡 Hint

Common Mistakes

Using info or debug instead of warn for warnings.

The warn level is used to indicate a potential problem or important situation that should be noticed.

3fill in blank

hard

Fix the error in the code to log a detailed trace message.

Spring Boot

logger.[1]("Entering method processData with parameters.");

Drag options to blanks, or click blank then click option'

Ainfo

Bdebug

Ctrace

Dwarn

Attempts:

3 left

💡 Hint

Common Mistakes

Using debug instead of trace for very detailed logs.

The trace level is the most detailed and is used for very fine-grained debugging information.

4fill in blank

hard

Fill both blanks to log an error message with an exception.

Spring Boot

logger.[1]("Failed to save data.", [2]);

Drag options to blanks, or click blank then click option'

Aerror

Bwarn

Cexception

Dex

Attempts:

3 left

💡 Hint

Common Mistakes

Using warn instead of error for exceptions.

Passing wrong variable name for exception.

The error level is used for serious issues. The exception object is passed as the second argument to log the stack trace.

5fill in blank

hard

Fill all three blanks to create a debug log that shows the user ID and action performed.

Spring Boot

logger.[1]("User [2] performed [3] action.");

Drag options to blanks, or click blank then click option'

Adebug

B{}

Clogin

Dinfo

Attempts:

3 left

💡 Hint

Common Mistakes

Using info instead of debug for detailed logs.

Not using placeholders for variables.

The debug level is used for detailed information useful during development. The placeholders {} are used to insert variables in the log message. Here, the action is 'login'.